On March 15, astronomers detected an asteroid that had passed closest to Earth on March 11, sweeping in at about the distance of our geostationary satellites.
Astronomers using a telescope in Chile have seen unexpected daily changes on Ceres' famous bright spots, suggesting they change under the influence of sunlight.
If you were standing on Mars, you could see Earth and the moon as two bright evening or morning "stars." A Mars rover captured this image of Earth in Mars' sky.